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Browse Prior Art Database

Static Chip Placement Head

IP.com Disclosure Number: IPCOM000086396D
Original Publication Date: 1976-Sep-01
Included in the Prior Art Database: 2005-Mar-03
Document File: 2 page(s) / 46K

Publishing Venue

IBM

Related People

Willard, LA: AUTHOR

Abstract

This is a novel mechanism for placing chips on a semiconductor module which does not rely on rotation or horizontal translation of the placement head. In this way the error of arc in a rotary head or the displacement error in the horizontal translation is eliminated. The machine performing this function achieves this unique result by having the orienter move under the chip and head rather than having the chip and head move over the orienter, and with the chip being fixedly and directly positioned over the chip site without any horizontal transfer mechanism. The figures illustrate the sequence of events during a single cycle of the machine.

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Static Chip Placement Head

This is a novel mechanism for placing chips on a semiconductor module which does not rely on rotation or horizontal translation of the placement head. In this way the error of arc in a rotary head or the displacement error in the horizontal translation is eliminated. The machine performing this function achieves this unique result by having the orienter move under the chip and head rather than having the chip and head move over the orienter, and with the chip being fixedly and directly positioned over the chip site without any horizontal transfer mechanism. The figures illustrate the sequence of events during a single cycle of the machine.

As shown in Fig. 1, a plurality of chips 10 are located in and are supplied from a chip chute 11. When the probe 12 is withdrawn, it is on approximately the same horizontal level with the top of a chip 10 as it exits from the chute 11. The probe 12 is provided with a suitable vacuum port 13 extending centrally through the probe 12, which prevents the chip 10 from falling when it is pushed out of the chute 11. The mechanism causing the chips 10 to exit from the chute 11 forces the chips 10 across the face of the probe 12 against the stop 15. When the chip has ceased movement, the probe 12 is moved in a vertical direction toward a cavity 14 on an orienter 16 which has been moved into position beneath the probe 13. The probe 13 then moves the chip into contact with the orienter cavity 14 (Fig. 2) such th...